/* Stili globali */
body {
  font-family: 'Open Sans', sans-serif;
  background: #f2f2f2;
  margin: 0;
  padding: 0;
}

/* HEADER */
.site-header {
  background: linear-gradient(135deg, #1a2a6c, #b21f1f, #fdbb2d);
  color: #fff;
  padding: 40px 20px;
  text-align: center;
}
.site-header h1 {
  font-family: 'Roboto', sans-serif;
  font-size: 3rem;
  margin-bottom: 10px;
  letter-spacing: 2px;
  text-shadow: 4px 4px 0 rgba(0,0,0,0.2), 8px 8px 0 rgba(0,0,0,0.15);
  transform: perspective(500px) rotateX(2deg) rotateY(2deg);
}
.site-header h4 {
  font-size: 1.5rem;
  margin-bottom: 0;
}

/* FOOTER */
.site-footer {
  background: #222;
  color: #fff;
  padding: 15px 0;
  text-align: center;
}
.fixed-bottom {
  position: fixed;
  bottom: 0;
  width: 100%;
  z-index: 1000;
}

/* CARD degli effetti e preset */
.effect-card {
  margin-bottom: 20px;
}
.effect-card .card-title {
  font-weight: 700;
}

/* Tastiera Virtuale (sintetizzatore) */
#keyboard .key {
  min-width: 50px;
  margin: 2px;
  flex: 1 0 60px;
}

/* Regolazioni responsive */
@media (max-width: 768px) {
  .site-header h1 {
    font-size: 2.5rem;
  }
  .site-header h4 {
    font-size: 1.2rem;
  }
}
